CN206057467U

CN206057467U - A kind of high-precise synchronization harvester

Info

Publication number: CN206057467U
Application number: CN201621103945.7U
Authority: CN
Inventors: 陈琨; 袁麓; 惠永智; 张波; 王江涛; 全志强
Original assignee: QIANJIANG (SHANGHAI) INFORMATION SCIENCE & TECHNOLOGY Co Ltd
Current assignee: Qianyue (Xi'an) Information Technology Co., Ltd.
Priority date: 2016-09-30
Filing date: 2016-09-30
Publication date: 2017-03-29
Anticipated expiration: 2026-09-30

Abstract

The utility model discloses a kind of high-precise synchronization harvester, including voltage transformer, for sampling to accessing the voltage signal before ammeter；Current transformer, for sampling to accessing the current signal before ammeter；Gearshift control and Signal-regulated kinase, the signal for having sampled to voltage transformer summation current transformer carry out automatic growth control, filtering and amplify；A/D chips, the signal for having sampled to voltage transformer summation current transformer carry out analog digital conversion, and the digital signal for converting is sent to FPGA process；The signal of this utility model collection carries time scale information, realize the synchronous high precision collecting of the signal of telecommunication, by using voltage, current transformer, ensure that the sampling precision of device, ensure that forceful electric power and light current are completely separable simultaneously, greatly reduce external electromagnetic interference, improve reliability and the safety of device；And these information not only can be in foreground real-time application, it is also possible to which compressed package sent carries out various applications and analysis to backstage.

Description

A kind of high-precise synchronization harvester

Technical field

This utility model is related to electrical signal collection field, and in particular to a kind of high-precise synchronization harvester.

Background technology

Data acquisition is an important step in signal processing, with developing rapidly for electronic technology, in electric energy The on-line monitoring of metering device, X -ray inspection X, power information gather etc. field, due to range of application expand, collection quantity of information it is many, People put forward higher requirement to the precision of data acquisition unit.

Tradition the acquisition method of the signal of telecommunication is mainly acquired to voltage and current signal by common transformer or Gathered by electric resistance partial pressure, its acquisition precision is typically poor.Simultaneously as the disappearance of synchronizing signal, causes multiple independent adopting There is larger error in the data that acquisition means are collected, for the on-line monitoring, online checking system to electric power meter, general Logical data acquisition unit far can not meet the requirement of system accuracy.

Utility model content

In order to solve the above problems, this utility model provides a kind of high-precise synchronization harvester, and this utility model sets Meter is reasonable, solves signal stationary problem, substantially increases the accuracy of collection signal.

To reach above-mentioned purpose, a kind of high-precise synchronization harvester described in the utility model, including：

Voltage transformer summation current transformer, is respectively used to adopt to accessing voltage signal and current signal before ammeter Sample；

Gearshift control and Signal-regulated kinase, the signal for having sampled to voltage transformer summation current transformer are carried out Automatic growth control, filtering and amplification；

A/D chips, for the signal after receiving gearshift control and Signal-regulated kinase process, and carry out modulus turn to which Change, the digital signal for converting is sent to into FPGA process；

FPGA, for receiving the digital signal of A/D chips transmission, electric energy meter pulse signal and being copied by RS485 interfaces The signal for receiving and information are assigned to time scale information by the electric energy meter internal information of reading, and FPGA is additionally operable to receive time reference letter Number, communicated with ARM and communicated with data centralised arrangement；Data after process are sent to ARM, ARM by the FPGA Data after the completion of FPGA is processed are packaged into ethernet frame form, are then returned to FPGA, the number that ARM encapsulation is completed by FPGA Data centralised arrangement is sent to according to bag；

The data centralised arrangement for communicating with background server, by the data is activation for collecting to background server.

Also include receiving the DDR3 of gathered data and information for caching FPGA.

Also include the power module of power supply for needed for all modules in harvester provide which, power module directly with The external power source connection of AC220V.

The packet that ARM encapsulation is completed is sent to data centralised arrangement by optical switch by the FPGA.

Also include constant-temperature crystal oscillator that is punctual for FPGA and being connected with FPGA.

The FPGA is by optical switch and IEEE1588 time reference communications reception external time reference signals.

Compared with prior art, this utility model at least has following beneficial technique effect, this utility model collection Signal carries time scale information, realizes the synchronous high precision collecting of the signal of telecommunication, by using voltage, current transformer, it is ensured that The sampling precision of device, while ensure that forceful electric power and light current are completely separable, greatly reduces external electromagnetic interference, improves device Reliability and safety；And these information not only can be in foreground real-time application, it is also possible to which compressed package sent is entered to backstage The various applications of row and analysis.

Further, also include constant-temperature crystal oscillator that is punctual for FPGA and being connected with FPGA, for the punctual control of FPGA, Improve the punctual ability of harvester so as to do not affected by ambient temperature, it is ensured that the stability of whole harvester.

Further, the FPGA is believed with IEEE1588 time reference communications receptions external time reference by optical switch Number, it is ensured that the synchronous high precision collecting of harvester and high efficiency of transmission, networking facilitate high precision, can effectively save and be routed to This, terminal when can supporting multiple pairs and meanwhile pair when.

Further, also include receiving the DDR3 of gathered data and information for caching FPGA, connect for caching FPGA The gathered data for receiving and information；Guarantee that FPGA fails the acquired original data of timely process and do not lose.

Description of the drawings

Fig. 1 is this utility model structured flowchart.

Specific embodiment

With reference to the accompanying drawings and detailed description this utility model is described in detail.

With reference to Fig. 1, a kind of high-precise synchronization harvester, including power supply needed for providing which for all modules in harvester Power module, power module directly be connected for the external power source of AC220V with voltage, for believing to accessing the voltage before ammeter Number and the voltage transformer summation current transformer sampled of current signal, for sampling to voltage transformer summation current transformer Complete signal carries out automatic growth control, filtering and the gearshift control for amplifying and Signal-regulated kinase；Also include A/D chips, Which is used to receive gearshift control and the signal after Signal-regulated kinase process, and carries out analog digital conversion to which, by what is converted Digital signal is sent to FPGA process；FPGA be used for receive A/D chips transmission digital signal, electric energy meter pulse signal with And by the electric energy meter internal information of RS485 interface copy readings, the signal for receiving and information being assigned to into time scale information, FPGA is also used Communicated with ARM and communicated with data centralised arrangement in reception time reference signal, FPGA is also associated with for caching The constant-temperature crystal oscillator that FPGA receives the DDR3 of gathered data and information and keeps time for FPGA, FPGA by optical switch with IEEE1588 time reference communications reception external time reference signals；Data after process are sent to ARM, ARM by the FPGA Data after the completion of FPGA is processed are packaged into ethernet frame form, are then returned to FPGA, and FPGA passes through optical switch by ARM The packet that encapsulation is completed is sent to data centralised arrangement；The data centralised arrangement will be adopted for communicating with background server The data is activation for collecting is to background server.

Utility model works principle is as follows：

As shown in figure 1, this utility model is mainly used to gather the voltage and current signal before accessing electric energy meter, electric energy meter arteries and veins Rush signal and by RS485 interface copy reading electric energy meter internal informations；Wherein, the voltage signal before electric energy meter is accessed through voltage Transformer is sampled, and accesses the current signal before ammeter and is sampled through current transformer, and voltage transformer and electric current are mutual First are delivered to signal gearshift control by the signal sampled for sensor and Signal-regulated kinase carries out automatic growth control, filters and put Greatly, then giving A/D chips again carries out analog digital conversion, and the digital signal that A/D chips are converted delivers to FPGA process again；

Electric energy meter is connected to the FPGA of harvester, FPGA copy reading electric energy meters by way of monitoring by RS485 interfaces Internal information；The pulse signal of electric energy meter is connected to the FPGA of harvester by pulse interface, and pulse signal includes active arteries and veins Rush signal and idle pulse signal；

What is be connected with FPGA also has constant-temperature crystal oscillator, ARM and DDR3, and constant-temperature crystal oscillator is mainly used to provide punctual clock so as to Do not affected by ambient temperature, it is ensured that the stability of whole harvester, ARM are mainly used to read the number that FPGA process is completed According to, and these data are packaged into ethernet frame form, are then returned to FPGA；DDR3 is mainly used to cache adopting of receiving of FPGA Collection data and information；Guarantee that FPGA fails the acquired original data of timely process and do not lose；

This utility model is powered by external power source, and supply voltage is AC220V, and external power source is directly filled with data acquisition Switch power module in putting is connected, power supply of the switch power module for needed for whole harvester modules provide which.

This utility model can accurately capture the pulse signal of ammeter, while also with 1-100KHz speed collection electric current, electricity Pressure information, and by the data with time scale information with device in data set is sent to, by calculating the voltage for obtaining collection point, electricity The information such as stream, frequency, phase place, power.This device adopts integrated module formula structure design, guarantees power using mutual inductor sample Electricity is completely separable, can greatly reduce external electromagnetic interference, improves reliability and safety.Using multi-layer PCB so that power supply, Strong signal and weak signal isolation, improve the capacity of resisting disturbance of equipment.

Meanwhile, Highgrade integration, small volume are lightweight, and install very simple, can apply and compare in various spaces Narrow and small ammeter screen cabinet.

Claims

1. a kind of high-precise synchronization harvester, it is characterised in that include：

Voltage transformer summation current transformer, is respectively used to sample to accessing voltage signal and current signal before ammeter；

Gearshift control and Signal-regulated kinase, the signal for having sampled to voltage transformer summation current transformer are carried out automatically Gain control, filtering and amplification；

A/D chips, for the signal after receiving gearshift control and Signal-regulated kinase process, and carry out analog digital conversion to which, The digital signal for converting is sent to into FPGA process；

FPGA, for receiving digital signal, the electric energy meter pulse signal and by RS485 interface copy readings of the transmission of A/D chips The signal for receiving and information are assigned to time scale information by electric energy meter internal information, FPGA be additionally operable to receive time reference signal and ARM is communicated and is communicated with data centralised arrangement；Data after process are sent to ARM by the FPGA, and ARM is by FPGA Data after the completion of process are packaged into ethernet frame form, are then returned to FPGA, and the packet that ARM encapsulation is completed is passed by FPGA Deliver to data centralised arrangement；

2. a kind of high-precise synchronization harvester according to claim 1, it is characterised in that also include for caching FPGA Receive the DDR3 of gathered data and information.

3. a kind of high-precise synchronization harvester according to claim 1, it is characterised in that also include in harvester All modules provide the power module of power supply needed for which, and power module is directly connected with the external power source of AC220V.

4. a kind of high-precise synchronization harvester according to claim 1, it is characterised in that the FPGA is exchanged by light The packet that ARM encapsulation is completed is sent to data centralised arrangement by machine.

5. a kind of high-precise synchronization harvester according to claim 1, it is characterised in that also include punctual for FPGA And the constant-temperature crystal oscillator being connected with FPGA.

6. a kind of high-precise synchronization harvester according to claim 1, it is characterised in that the FPGA is exchanged by light Machine and IEEE1588 time reference communications reception external time reference signals.